Synthesis and Characterization of Anionic Graft Copolymers Containing Poly(ethylene oxide) Grafts

Helene Dérand, Bengt Wesslén

Research output: Contribution to journalArticlepeer-review

Abstract

Anionic graft copolymers were synthesized through grafting of poly(ethylene glycol) monomethyl ether (MPEG) onto terpolymers containing succicinic anhydride groups. The backbone polymers were prepared through radical terpolymerization of maleic anhydride, styrene, and one of the following monomers: methyl methacrylate, ethylhexyl methacrylate, and diethyl fumarate. MPEG of different molecular weights were grafted onto the backbone through reactions with the cyclic anhydride groups. In this reaction one carboxylic acid group is formed together with each ester bond. The molecular weights of MPEG were found to influence the rate of the grafting reaction and the final degree of conversion. The graft copolymers were characterized by IR, GPC, and IH-NMR. Thermal properties were examined by DSC. Graft copolymers containing 50% w/w of MPEG 2000 grafts were found to be almost completely amorphous, presumably because of crosslinking, and hydrogen bonding between carboxylic acid groups in the backbone and the ether oxygens in MPEG grafts.
Original languageEnglish
Pages (from-to)571-579
JournalJournal of Polymer Science. Part A, Polymer Chemistry
Volume33
Issue number3
DOIs
Publication statusPublished - 1995

Subject classification (UKÄ)

  • Chemical Engineering

Keywords

  • maleic anhydride-styrene copolymer
  • comb-shaped polymers
  • grafting
  • anionic graft copolymers
  • poly (ethylene glycol)
  • thermal properties

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